Pump.



A. MITCHELL.

PUMP.

APPLICATION FILED Nov. 19,15. nsmzwm FEB. 21. ma.

,f. i Patented May 21, i918,

2 SHEETS-SHEET I.

Elk/tacna? g II. lIIIIICIILLL,

PUNIP.

APPLICATION FILED Nov. s. I9I5. IIEIIIEwED FEB. 21. l1918.

Patented May 2i,

2 SHEETS-SHEET E.

j@ .ilnlil insu. IIIIIVIV 'IIIIIIII .AMOS MITCHELL, 0F KIRKSVILLE, MISSOURI,

KENNEDY AND ONE-FOURTH TO JAMES H. MUNDEN, OF

ASSIGNOR OF ONE-FOURTH T0 THOMAS B.

KIRKSVILLE, MISSOURI.

PUMP.

Specification of Letters Patent.

Application filed November 8, 1915, Serial No. 60,327. Renewed February 21, 1918. Serial No. 218,593.

To all whom t may concern.'

Be it known that I, AMos Mironem., a citizen of the United States, residing at lKirksville, in the county of Adair and State of Missouri, have invented certain new and useful Improvements in Pumps, of which the following is a speciiication.

The invention has relation to pumps for elevating water and which are adapted to be actuated by means of weight, such as exerted by man or beast when stepping upon a platform or like movable part.

The primary purpose of the invention is the provision of a pump for supplying water t0 a stock trough, such pump being adapted to be actuated by the weight of the animal when approaching the trough to quench its thirst.

The invention has for its obj ect to prevent the standing of water in the trough which is objectionable in cold weather since it is liable to freeze and which in Warm weather becomes heated and is liable to collect dust or other foreign matter.

The invention contemplates a drain which is automatically actuated by the same means devised for operating the pump, said drain closing when the water is discharging into the trough and opening when the pump operating means is released from the actuating weight. l

With these and other objects in view, which will readily appear as the nature of the invention is better understood, the same consists in the improvedl construction and novel arrangement and combination of parts which will be hereinafter fully described and particularly claimed.

In the accompanying drawings has been illustrated a simple and preferred form of the invention, it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited, but that changes, alterations and modifications within the scope of the invention as claimed may be resorted to when desired.

Referring to the drawings,-

Figure 1 is a erspective view, parts being broken away, of) a cattle or weight operated pump embodying the invention;

Fig. 2 is an enlarged sectional view of the PUHP Proper;

Fig. 3 is a side View of the pump operating means showing the trough and drain in secy tion;

Fig. 4c is a detail perspective view of the parts illustrated in Fig. 3;

Fig. 5 is a horizontal section on the line 5 5 of Fig. 2;

Fig. 6 is a side View of a modied form of pump actuating means.

Corresponding and like parts are referred to in the followin description and indicated in all the views of the drawings by the same reference characters.

The numeral 1 designates a well or like source of water supply to which a pump embodying the invention is applied. The pump comprises a cylinder 2 and a piston 3, the latter being relatively fixed and the cylinder 2 mounted to have a vertical reciprocatory movement imparted thereto. The piston 3 is attached to the lower end of a discharge pipe 4 which is relatively fixed and has its upper end curved to form a spout for delivering the water into a trough 5. The piston 3 is hollow and is provided at its outer edge with a suitable packing to insure the formation of a water-tight joint between the piston and cylinder. The space 6 formed within the piston 3 is of conical forni, the flare being downward so as to cause the water to readily enter and pass through the piston upon the upstroke of the cylinder. A suitable check valve 7 is disposed in the length of the discharge pipe to support the column of water therein and prevent return of Sie water from the discharge pipe into the we The cylinder 2 is provided with end pieces 8 and 9 which are retained in place thereon by means of rods 10, such rods passing through apertured ears formino a part of the end pieces 8 and 9. Nuts 11 tlireaded upon the rods 10 clamp the end pieces 8 and 9 against the extremities of the cylinder 2. The rods 10 are extended at their upper ends and are connected to a cross piece 12 which is slidably mounted upon the discharge pipe 4. A pair of nuts 13 threaded upon the upsuch platform a -distance to receive the y is such as to cause the cylinder to descend ,when relieved of the weight applied to the ltrough 5 and extends above such bottom a per end of each of the rods 10 confines the cross piece 12. Other rods 14 are connected at their lower ends to the cross piece 12 and extend upwardly along opposite sides of the discharge pipe and are yieldably connected at their upper ends to the power actuated member which preferably consists of a platform 15. The platform 15 is pivotally sup? ported between its ends and is disposed. in

such relation that an animal approachingk vthe trough is compelled to step thereon,

thereby actuating the pump and causing a quantity of water to discharge into the trough 5. To prevent injury to the pump and connections by a too sudden movement of the platform 15, cushioning means 16 are interposed between the platform 15 and the rods 14. Such cushioning means consist of expansible helical springs, which are mount- 'e'd upon the upper ends of the rods 14 and are confined thereon between the platform 15 and suitable stops, such as pins 17 passed through openings in the upper ends of the rods 14. The rods 14 pass through openings formed in the platform 15 and extend above springs 16. The provision of the two rods 14 'equali'zes the strain and prevents binding of the movable parts. 'The vlower end piece 9 is provided with a flap valve 18 which opens upwardly and closes downwardly,

thereby confining the water in the cylinder.

"A screen 19 is disposed below the end piece i 9 to prevent gravel or other foreign matter from entering the cylinder when the pump is in operation. The screen 19 is attached to the lower ends of the rods 10.

Under normal conditions the lower Vend of `the cylinder 2 is some distance below the piston 3 and the pump is so placed as to be nearly or quite submergedin the water to be elevated so that upon the descent of the cylinder to a normal position the water will pass from the well or other source of supply into the cylinder through the valve 18. When the cylinder 2 is raised by a weight 'being applied to the platform 15 the valve 18 becomes seated and the water confined .in the lower portion of the cylinder is forced upwardly into the discharge pipe 4 land by the check valve 7 which opens as the cylinder rises. When the cylinder lowers the valve 7 closes and supports the column of water in the discharge pipe above such valve.

The weight of the cylinder and connections platform 15 for actuating the pump.

Toprevent water standing in the trough 5 -a drain pipe 20 is litted to the bottom of the suitable distance. An opening 21 is formed in a side of the drain pipe 20 near the bottom of the trough for the escape of the waally `connected' at one :end toth'e discharge pipe 4 and its opposite end is connected to the upper end of thecutfoff' 22. A rod 25 connects the `lever 24 with the i platform A15. `The several 'connections are adjustable to provide for 'proper installation and to al in position.l Should it be required to permit thewater to sta'ndin the ltrough 5 the ,cut-od" 2.2 may be disconnected .from the actuatingmeansfand moved to a position to throw the opening 23 out of register with the opening 21. The upper end of the cutofi' 22 being open provides an overflowfor the water and thereby preventsthe overlow for variations 'when placing the pump 'flowing ofthey trough uponfthe surface. The

cut-off 22 may be adjusted so as to provide overiiow for regulating the height of the water in the trough when the cut-off is disconnected from the pump actuatingineans.

In the modification illustrated in Fig. 6, the platform 15a one end and'vits oppositeend is'eonne'cted by v means yof a rod 26 with 'a member 27 mounted upon a bracket 28 the oppositepart of is pivotally supported at y the member 27 beingconnected to therod 14 in substantially the same manner as hereinbefore described in connection with the platform 'The' provision of the platform15L gives greater clearance to prevent snow, ice and foreign matter from accumulating beneath the platform and interfering with its effective operation. v Y,

Having thus described the invention, what is claimed as new is i; i

1. A pump comprising'a fixed dischargeA pipe, a piston at the lower end charge pipe, a cylinder slidable upon". the discharge pipev and piston, end-pieces fitted to the extremitiesof the cylinder, the lower end A of the disi piece having4 an openingwhich is f controlled by means of an upwardly opening 'i valve, rods connecting the end pieces and piece connectinglthe extended ends of the rods,- and other rodsconnected to the crossr piece' land transmitting miovenrent to the cylinder. j

2. Iny a pump an operating `member mounted for reciprocati'on,l a platform ,'-having theirk upper ends.y extended, a cross mounted for tiltingj movementA and vopera-1v tively connected to the operating member,

a swingingly mounted lever arm, a link an opening adapted in one position to regisconneoting one end portion of the platform ter with the opening in the drain pipe, and 10 with an intermediate portion of the lever, operative connection between the second a liquid receiving receptacle, a drain pipe pipe and the lever.

5 opening through the bottom of the recep- In testimony whereof, I aiflx my Signa taele and provided near the bottom with ture. an opening in its Side, a pipe telescopically itting in the drain pipe and provided with AMOS MITCHELL. [n 5.]

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

